Insulated car body



2 Sheets-Sheet 1 Original Filed July 23, 1962 m a mm WA 25- -154/24: THEES AwC'Azon/ses April 5, 1966 F. J. GARRETT 3,244,119

INSULATED CAR BODY Original Filed July 23, 1962 2 Sheets-Sheet 2 o o o o H 2a--- ."-2a-- l lllln. I 5

INVENTOR. Fem/(J 614m: 77'

BY C/mo rh'ses AND C1420 wees H15 147' raeus Y5 United States Patent 3,244,119 INSULATED CAR BODY Frank J. Garrett, Kings Highway, Rosslyn Farms, Pa. Continuation of application Ser. No. 211,586, July 23, 1962. This application May 28, 1965, Ser. No. 459,851 8 Claims. (Cl. 105-238) This invention relates generally to insulated car bodies and more particularly insulated car bodies for carrying hot billets, ingots, and the like from the furnaces and molds to other locations for reheating and working.

This application is a continuation of application Ser. No. 211,586, filed July 23, 1962, now abandoned.

The problem is to maintain as much sensible heat in the body of metal while transporting it to the place where it is to be worked. The metal is usually reworked after which it is reprocessed. Frequently the scheduling or rescheduling of the mill creates unforeseen delays, and during such delays it is desirable to maintain as much sen sible heat as possible in the hot metal. To do this the hot metal is placed in a car and transported to the location where it is to be processed. To retard heat losses of the hot metal, a flame is placed on the metal during the time it is in transit. The heating and cooling of the car body from the hot steel and the flame causes the car body to warp and after a relatively short period of time it is difiicult to retain the sensible heat in the metal and the car body is unable to carry the load.

Another object is the provision of an insulated car body having spaced double walls, the inner wall of which is supported to permit relative movement to the rest of the car when being heated or cooled.

Another object is the provision of a car body having inner movable side walls the ends of which are movable in end pockets at each corner of the car body.

Another object is the provision of an insulated car body having separable and movable inn-er side walls with guide means to control its separable movement.

Another object is the provision of a car body having a movable inner wall that is held in movable spaced relation from the outer wall thereof. The means for holding the movable inner wall includes spaced bolts together with spacer members that bolt the movable inner wall to the outer wall which bolts pass through oval slots in the inner side walls to permit relative movement between these inner side walls and the bolt holes are covered or enclosed by washers mounted on the bolts. The bolt openings in the inner side walls become progressively longer adjacent the ends of these movable inner side walls.

Another object is a movable inner side wall plate for use with an insulated car which side wall plate is of greater depth in its intermediate portion and which is provided with progressively larger holes from the center to the ends of the plate to permit longitudinal movement when secured to the outer side walls.

Other objects and advantages of this invention appear hereinafter in the following description and claims.

The accompanying drawings show for the purpose of exemplification without limiting this invention or the claims thereto, certain embodiments illustrating the principles of this invention wherein:

FIG. 1 is a perspective view of the insulated car body comprising this invention.

FIG. 2 is a perspective view of the insulated car body having the inner walls removed.

FIG. 3 is a view in side elevation of one of the inner walls of the car body.

FIG. 4 is a transverse sectional view of the insulated car body comprising this invention.

FIG. 5 is a transverse sectional view of the car body with the insulation removed.

Referring to FIG. 1 the car body 1 is made up of the bottom 2 and outer permanent end wall members 3 and 4 and outer permanent side walls 5 and 6 of a gondola type railroad car.

Each of the outer end walls 3 and 4 have secured thereto in spaced relation the respective complementary inner end walls 7 and 8, with insulation block material 10 therebetween. A permanently fixed return wall section 9 is provided ateach end of each inner end wall 7 and 8. Each of the four return wall sections 9 are spaced inwardly from the permanent side walls 5 and 6 and form with said outside permanent side walls 5 and 6 tWo pairs of oppositely facing-pockets 20, one at each inside corner of the car.

As shown in FIG. 2 the space between the inner and outer walls is provided with an insulating material such as insulating blocks 10. These blocks 10 are preferably fitted to the structure and are drilled or otherwise provided with openings to receive the bolts 11 each of which is provided with a washer as indicated at 12. As shown in FIG. 4, the bolts 11 are preferably provided with a head 13 on the inner face of the wall and a spacer sleeve such as a pipe section 14 is slipped over the bolt to space the inner walls 7, 8, 9 and 15 from their respective outer car walls 3, 4, 5 and 6 around the car body.

The inner side walls 15 have their opposite ends eX- tended behind the respective return walls 9.

The inner end walls 7 and 8 are attached to their respective end walls 3 and 4 by the bolts 11 and the spacer sleeve 14, and the inner end wall extensions 9 are attached in like manner by the bolts 11 to their respective side walls 5 and 6.

The bolts 11 with their sleeves 14 will support the insulation blocks 10 and aid in retaining the proper spaced relation between the inner and outer walls of the car. These blocks 19 are preferably made to withstand .a very high temperature without crumbling or otherwise disintegrating. As shown in FIGS. 4 and 5 a channel type brace member 17 and Z type brace member 18 are shown as additional spacer members intermediate the vertical rows of bolts 11. In this manner, the inner walls 7, 8, 9 and 15 are supported from the outer walls 3, 4, 5 and 6 at fixed spaced positions regardless of whether it is an end wall or movable inner side wall 15.

At each corner of the car, the return wall section 9, at each end of the inner end walls 7 and 8, forms with its respective permanent side wall an inturnedpocket 20. Thus a pair of opposed pockets 20 at the opposite ends of the car receive the ends of the inner side walls 15. These return wall sections 9 although secured to the inside end walls 7 and 8 form the pockets 20 with the outer side walls 5 and 6 and are provided with bolts 11 and spacers 14 and'with insulating material between the inner and outer wall sections.

The inner side wall members 15 are independent as shown in FIG. 3. Each wall 15 may be made of a series of fabricated sections of steel plate 21 or from a single steel plate. This inner wall 15 has a greater height at its center as illustrated at 19 than at its ends as indi- 3 cated at 23. Each of its opposite ends are of the same height. This difference in height is made along the bottom of the side wall plate 15 as shown in FIG. 3. With this under inclined surface extending toward each end, the plate readily rides over any obstruction as it lengthens longitudinally.

Each of the inner said walls 15 may be made of plates 21 and are provided with a series of oval openings 22 which become progressively longer from the center towards each end. These openings or holes are for the purpose of receiving the bolts 11 and are large enough to receive the bolts 11 but the ends of the spacers 14 engage the inner surface of the inner and outer walls 15 and 5 and 6 to hold them in spaced relation with each other while the washers 12 hold the walls 15 from excessively warping or buckling inwardly.

It has been found that once an inner side wall 15 has been heated to an intensive heat to maintain the temperature of the billets, slabs, ingots, plates or other articles in the car body, upon cooling will reduce the side walls 15 to a size less than original size; and it is necessary to also provide the openings 22 in the inner side walls 15 long enough to prevent any shearing action on these bolts 11.

The bottom 2 of the car body may be provided with a series of transverse beams of any suitable size or shape. As illustrated these beams may be heavy railroad rails such as illustrated at 24, or they may be merely beams of square cross section or billets as illustrated at 25. These beams are secured to the floor 2 of the car body as by welding and the space between adjacent beams and even the space thereover is covered with insulating material such as a granular insulator of which slag may consist of an essential part or insulating blocks of slag 26. However, the insulating blocks 1! may also be cut up and laid on the floor and thereafter covered with slag or other insulating material such as mica. Thus the insulating not only covers the floor of the car body, but also may be piled high above the rails so that the hot metal actually rests on the insulated part of the rails. The transverse rails may thus not directly support the hot steel.

Referring again to FIG. 4 the outer permanent side wall 5 is provided with an outward extending angle 27 which may actually be above the top angle brace brackets 23 of the car body. However, the car body is preferably built higher on one side and a cover is placed thereon for removal and replacement in which instance it is preferable to slope the roof or cover downwardly from the high side and one side of the car would be provided with an upward extension.

An inturned flange 30 is secured along the upper edge of the permanent end and side walls 3, 4, 5 and 6. The spaced inner end and side walls 7, 8 and 15 have secured to their upper edges the outturned flange 31 that extends over the inturned flange 30 to close the space between the inner and outer car walls. It is best for the inner side walls 15 to carry the outturned flange 31 above the flanges 30 because of the expansion and contraction movement of these inner walls 15.

This structure permits the inner walls 15 to readily move relative to its counterpart, the outer permanentwalls 5 and 6 and the overhanging protective flange 31 seals the space therebetween.

The ends of the transverse beams 24 and also function to guide the exposed surface of the inner walls 15, however intermediate these beams, the floor may be provided with upturned brackets 32 to permit relative movement not only of the side walls 15, but also to guide the members being heated in the car.

I claim:

1. An insulated car body for carrying hot metal forms consisting of a metal bottom for said body having insulating material over which the hot metal forms are supported, upstanding outer permanent metal end and side walls secured to each other and to said bottom to define said body, an upstanding inner metal end wall for each end of the car secured to said bottom, means to secure said inner metal end walls to their respective outer permanent metal end walls in spaced relation, an inner unitary metal side wall spaced inwardly from each permanent outside wall and extending for approximately the full inside dimension of said outer permanent metal side walls, means to secure said inner unitary metal side walls to the center of said outer permanent metal side walls in spaced relation, means to retain the remaining portion of said inner unitary metal side walls against lateral movement and allow relative longitudinal movement of the remaining portions of said inner unitary metal side walls relative to said outer permanent metal side walls and to allow the ends of said inner unitary metal side walls to pass on the outer side of the ends of said inner metal end walls, and insulation material between said outer permanent metal walls and said inner metal end and side walls.

2. The insulated car body of claim 1 characterized by returns on the ends of said inner metal end walls adjacent to and parallel with each outer permanent metal side wall at each corner of said car body providing opposed inwardly open poekets, the ends of said unitary inner metal side walls extending into said pockets and retained thereby for expansion and contraction.

3. The insulated car body of claim 1 characterized by guide means extending upwardly from said bottom and spaced from said permanent walls to retain the bottom edge of said unitary inner metal side walls, the upper edge of said guide means being above the lower edge of said inner side walls to overlap the same.

4. The insulated car body of claim 1 characterized in that said means to retain and support said unitary inner metal side walls against lateral movement includes spacer members, insulation material between said spacers and said outer permanent metal walls and said inner metal side walls, and bolt means including bolt stems extending through holes in said unitary inner metal side walls and insulation and said permanent metal side walls.

5. The insulated car body of claim 4 characterized in that said bolt means includes a washer covering the hole in said unitary inner metal side walls, said holes becoming progressively longer from the center of each of said unitary inner metal side walls to its ends to allow for greater longitudinal movement of said unitary inner metal side walls adjacent said outer permanent metal end walls.

6. An insulated car body for carrying hot metal forms consisting of a bottom for said body having insulating material over which the hot metal forms are supported, upstanding outer permanent end and side walls secured to each other and to said bottom to define said body, an inner end wall spaced from and attached to each of said permanent end walls and insulation therebetween, a return on each end of each inner end wall providing with said outer permanent side walls opposed inwardly open pockets adjacent to and parallel with each outer permanent side wall at each corner of said car body, an inner side wall spaced inwardly from each permanent outer side wall with its ends extending into its adjacent end pocket, spacer members and insulating material between said outer permanent and said inner walls, bolts extending through holes in said inner side walls and said outer permanent side walls to support with said spacers said inner side walls, washers on said bolts covering said holes through said inner side walls, said holes each becoming progressively longer from the center of each of said inner side walls to the ends thereof to allow for greater longitudinal movement adjacent the ends of said inner side walls, a guide extending upwardly from said bottom and in front of each inner side wall, the top of each guide overlapping the bottom edge of its respective inner side Wall, and an outwardly extending flange along the upper edge of each inner side wall to extend over a portion of the adjacent outer permanent side wall.

7. The insulated car body of claim 6 characterized in that inner side walls are of greater depth at their center than at each end.

8. An inner side wall of an insulated car body consisting of a unitary wall of materially greater length than width, the greatest width of said unitary wall being at the center, the top edge of said unitary wall being straight and the bottom edge tapering upwardly from the center toward each end, a series of spaced mounting holes extending from the center of said unitary wall to each end thereof for securing and guiding said wall, said holes becoming progressively longer from the center to the ends of said unitary wall to allow for greater expansion and contraction movement adjacent the ends of said unitary wall.

No references cited.

ARTHUR L. LA POINT, Primary Examiner.

10 D. E. HOFFMAN, Assistant Examiner. 

1. AN INSULATED CAR BODY FOR CARRYING HOT METAL FORMS CONSISTING OF A METAL BOTTOM FOR SAID BODY HAVING INSULATING MATERIAL OVER WHICH THE HOT METAL FORMS ARE SUPPORTED, UPSTANDING OUTER PERMANENT METAL END AND SIDE WALLS SECURED TO EACH OTHER AND TO SAID BOTTOM TO DEFINE SAID BODY, AN UPSTANDING INNER METAL END WALL FOR EACH END OF THE CAR SECURED TO SAID BOTTOM, MEANS TO SECURE SAID INNER METAL END WALLS TO THEIR RESPECTIVE OUTER PERMANENT METAL END WALLS IN SPACED RELATION, AN INNER UNITARY METAL SIDE WALL SPACED INWARDLY FROM EACH PERMANENT OUTSIDE WALL AND EXTENDING FOR APPROXIMATELY THE FULL INSIDE DIMENSION OF SAID OUTER PERMANENT METAL SIDE WALLS, MEANS TO SECURE SAID INNER UNITARY METAL SIDE WALLS TO THE CENTER OF SAID OUTER PERMANENT METAL SIDE WALLS IN SPACED RELATION, MEANS TO RETAIN THE REMAINING PORTION OF SAID INNER UNITARY METAL SIDE WALLS AGAINST LATERAL MOVEMENT AND ALLOW RELATIVE LONGITUDINAL MOVEMENT OF THE REMAINING PORTIONS OF SAID INNER UNITARY METAL SIDE WALLS RELATIVE TO SAID OUTER PERMANENT METAL SIDE WALLS AND TO ALLOW THE ENDS OF SAID INNER UNITARY METAL SIDE WALLS TO PASS ON THE OUTER SIDE OF THE ENDS OF SAID INNER METAL END WALLS, AND INSULATION MATERIAL BETWEEN SAID OUTER PERMANENT METAL WALLS AND SAID INNER METAL END AND SIDE WALLS. 